| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 0 |
| 7 | 1 |
| 8 | 5 |
| 9 | 5 |
| 10 | 0 |
| 11 | 1 |
| 12 | 9 |
| 13 | 21 |
| 14 | 14 |
| 15 | 0 |
| 16 | 1 |
| 17 | 14 |
| 18 | 56 |
| 19 | 84 |
| 20 | 42 |
| 21 | 0 |
| 22 | 1 |
| 23 | 20 |
| 24 | 120 |
| 25 | 300 |
| 26 | 330 |
| 27 | 132 |
| 28 | 0 |
| 29 | 1 |
| 30 | 27 |
| 31 | 225 |
| 32 | 825 |
| 33 | 1485 |
| 34 | 1287 |
| 35 | 429 |
| 36 | 0 |
| 37 | 1 |
| 38 | 35 |
| 39 | 385 |
| 40 | 1925 |
| 41 | 5005 |
| 42 | 7007 |
| 43 | 5005 |
| 44 | 1430 |
| 45 | 0 |
| 46 | 1 |
| 47 | 44 |
| 48 | 616 |
| 49 | 4004 |
| 50 | 14014 |
| 51 | 28028 |
| 52 | 32032 |
| 53 | 19448 |
| 54 | 4862 |
| 55 | 0 |
| 56 | 1 |
| 57 | 54 |
| 58 | 936 |
| 59 | 7644 |
| 60 | 34398 |
| 61 | 91728 |
[1,0,1,0,1,2,0,1,5,5,0,1,9,21,14,0,1,14,56,84,42, 0,1,20,120,300,330,132,0,1,27,225,825,1485,1287, 429,0,1,35,385,1925,5005,7007,5005,1430,0,1,44, 616,4004,14014,28028,32032,19448,4862,0,1,54,936, 7644,34398,91728] |